macroblock.h File Reference

Arrays for macroblock encoding. More...

#include "block.h"

Include dependency graph for macroblock.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Functions
void	set_interpret_mb_mode (int slice_type)
void	get_neighbors (Macroblock *currMB, PixelPos *block_a, PixelPos *block_b, PixelPos *block_c, PixelPos *block_d, int mb_x, int mb_y, int blockshape_x)
void	GetMotionVectorPredictor (Macroblock *currMB, PixelPos *block_a, PixelPos *block_b, PixelPos *block_c, short pmv[2], char ref_frame, char **refPic, short ***tmp_mv, int mb_x, int mb_y, int blockshape_x, int blockshape_y)
void	start_macroblock (ImageParameters *img, Macroblock **currMB)
void	read_one_macroblock (ImageParameters *img, Slice *currSlice, Macroblock *currMB)
int	decode_one_macroblock (ImageParameters *img, Macroblock *currMB, StorablePicture *dec_picture)
Boolean	exit_macroblock (ImageParameters *img, int eos_bit)
Variables
const byte	QP_SCALE_CR [52]

---

Detailed Description

Arrays for macroblock encoding.

Author:

Inge Lille-Langoy <inge.lille-langoy@telenor.com> Copyright (C) 1999 Telenor Satellite Services, Norway

Definition in file macroblock.h.

---

Function Documentation

int decode_one_macroblock	(	ImageParameters *	img,
		Macroblock *	currMB,
		StorablePicture *	dec_picture
	)

decode one macroblock

Definition at line 4620 of file macroblock.c.

References colocated_params::bottom, storable_picture::chroma_vector_adjustment, decode_ipcm_mb(), decode_one_component(), colocated_params::frame, storable_picture::imgUV, storable_picture::imgY, macroblock::mb_field, macroblock::mb_type, storable_picture::structure, colocated_params::top, and YUV444.

Referenced by decode_one_slice().

Here is the call graph for this function:

Boolean exit_macroblock	(	ImageParameters *	img,
		int	eos_bit
	)

set coordinates of the next macroblock check end_of_slice condition

The if() statement below resembles the original code, which tested

img->current_mb_nr == img->PicSizeInMbs. Both is, of course, nonsense In an error prone environment, one can only be sure to have a new picture by checking the tr of the next slice header!

Definition at line 630 of file macroblock.c.

References FmoGetNextMBNr().

Referenced by decode_one_slice().

Here is the call graph for this function:

void get_neighbors	(	Macroblock *	currMB,
		PixelPos *	block_a,
		PixelPos *	block_b,
		PixelPos *	block_c,
		PixelPos *	block_d,
		int	mb_x,
		int	mb_y,
		int	blockshape_x
	)

Get current block spatial neighbors.

Definition at line 1740 of file macroblock.c.

References get4x4Neighbour().

Referenced by readMBMotionVectors().

Here is the call graph for this function:

void GetMotionVectorPredictor	(	Macroblock *	currMB,
		PixelPos *	block_a,
		PixelPos *	block_b,
		PixelPos *	block_c,
		short	pmv[2],
		char	ref_frame,
		char **	refPic,
		short ***	tmp_mv,
		int	mb_x,
		int	mb_y,
		int	blockshape_x,
		int	blockshape_y
	)

Get motion vector predictor.

Definition at line 1790 of file macroblock.c.

References macroblock::mb_field.

Referenced by readMBMotionVectors().

void read_one_macroblock	(	ImageParameters *	img,
		Slice *	currSlice,
		Macroblock *	currMB
	)

Get the syntax elements from the NAL.

TO for error concealment If we have an INTRA Macroblock and we lost the partition which contains the intra coefficients Copy MB would be better than just a gray block. Seems to be a bit at the wrong place to do this right here, but for this case up to now there is no other way.

Definition at line 1134 of file macroblock.c.

References assignSE2partition, macroblock::b8mode, macroblock::b8pdir, datapartition::bitstream, macroblock::cbp, Slice::dp_mode, Slice::dpB_NotPresent, macroblock::ei_flag, Bitstream::ei_flag, Bitstream::frame_bitoffset, init_macroblock(), syntaxelement::len, linfo_ue(), macroblock::luma_transform_size_8x8_flag, syntaxelement::mapping, pic_motion_params::mb_field, macroblock::mb_field, mb_is_available(), macroblock::mb_type, storable_picture::motion, macroblock::NoMbPartLessThan8x8Flag, Slice::partArr, macroblock::qp, read_ipred_modes(), readB8_typeInfo_CABAC(), readCBPandCoeffsFromNAL(), syntaxelement::reading, readIPCMcoeffsFromNAL(), readMB_skip_flagInfo_CABAC(), readMB_transform_size_flag_CABAC(), readMB_typeInfo_CABAC(), readMotionInfoFromNAL(), datapartition::readSyntaxElement, readSyntaxElement_FLC(), SE_HEADER, SetB8Mode(), macroblock::skip_flag, syntaxelement::type, update_qp(), syntaxelement::value1, and syntaxelement::value2.

Referenced by decode_one_slice().

Here is the call graph for this function:

void set_interpret_mb_mode

(

int

slice_type

)

Set mode interpretation based on slice type.

Definition at line 886 of file macroblock.c.

References interpret_mb_mode_B(), interpret_mb_mode_I(), interpret_mb_mode_P(), and interpret_mb_mode_SI().

Referenced by decode_one_slice().

Here is the call graph for this function:

void start_macroblock	(	ImageParameters *	img,
		Macroblock **	currMB
	)

initializes the current macroblock

Definition at line 552 of file macroblock.c.

References CheckAvailabilityOfNeighbors(), error(), storable_picture::max_slice_id, macroblock::mbAddrX, macroblock::qp, storable_picture::slice_id, and update_qp().

Referenced by decode_one_slice().

Here is the call graph for this function: